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Ultrasonic transducer

An ultrasonic and transducer technology, applied in the field of broadband ultrasonic transducers, can solve the problem that the working mode cannot meet the needs of use

Active Publication Date: 2021-05-25
GOERTEK MICROELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] On the other hand, with the expansion of the application of ultrasonic transducers, the working mode of a single frequency point cannot meet the needs of use, and the ultrasonic transducer is required to provide relatively good transmission / reception signals within a certain bandwidth. Apparently it cannot meet this requirement

Method used

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Embodiment Construction

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0039] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0040] In addition, if there are descriptions involving "first", "second" and ...

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Abstract

The invention discloses an ultrasonic transducer, which comprises multiple ultrasonic wave generating units. At least two ultrasonic wave generating units in the multiple ultrasonic wave generating units have different resonant frequencies. Compared with an ultrasonic transducer with only a single resonant frequency, the ultrasonic transducer provided by the invention is used as a generating unit, and an ultrasonic signal obtained by superposing ultrasonic waves emitted by the multiple generating units with the different resonant frequencies can be kept relatively stable in a relatively wide frequency range. As a receiving unit, multiple receiving units with different resonant frequencies sense the ultrasonic waves to obtain voltage signals, and stability can be kept in a relatively wide frequency range at one end, so that the broadband is relatively wide.

Description

technical field [0001] The invention relates to an ultrasonic transducer, in particular to a broadband ultrasonic transducer. Background technique [0002] At present, ultrasonic transducers are mainly resonant single-frequency point transducers. This type of transducer usually only works at a single frequency point, such as 40kHz. This is because this type of ultrasonic transducer has only one transmitting / receiving unit. / The received signal drops off quickly after departing from the corresponding resonance. Generally speaking, for an ultrasonic transducer with a standard working frequency of 40kHz, the sound pressure value of the transmitted 45kHz signal can be reduced by 30dB compared with the sound pressure value at 40kHz, and the received signal has a similar effect. [0003] This will lead to the problem of poor consistency and the problem that the ultrasonic transducer integrated with transceiver cannot exert the optimal performance. The poor consistency is mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B06B1/06
CPCB06B1/06
Inventor 张丹阳俞胜平
Owner GOERTEK MICROELECTRONICS CO LTD